CN201329518Y - Balance mechanism of five-shaft machining center for double pendulum turntable - Google Patents

Balance mechanism of five-shaft machining center for double pendulum turntable Download PDF

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Publication number
CN201329518Y
CN201329518Y CNU2008201239908U CN200820123990U CN201329518Y CN 201329518 Y CN201329518 Y CN 201329518Y CN U2008201239908 U CNU2008201239908 U CN U2008201239908U CN 200820123990 U CN200820123990 U CN 200820123990U CN 201329518 Y CN201329518 Y CN 201329518Y
Authority
CN
China
Prior art keywords
axle
turntable
hydraulic cylinder
double pendulum
thrust
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
CNU2008201239908U
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Chinese (zh)
Inventor
高琦
王博
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BMEIMT Co., Ltd.
Original Assignee
BMEI Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by BMEI Co Ltd filed Critical BMEI Co Ltd
Priority to CNU2008201239908U priority Critical patent/CN201329518Y/en
Application granted granted Critical
Publication of CN201329518Y publication Critical patent/CN201329518Y/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23QDETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q11/00Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
    • B23Q11/001Arrangements compensating weight or flexion on parts of the machine
    • B23Q11/0017Arrangements compensating weight or flexion on parts of the machine compensating the weight of vertically moving elements, e.g. by balancing liftable machine parts
    • B23Q11/0021Arrangements compensating weight or flexion on parts of the machine compensating the weight of vertically moving elements, e.g. by balancing liftable machine parts the elements being rotating or pivoting

Abstract

The utility model relates to a balance mechanism of a five-shaft machining center for a double pendulum turntable. The balance mechanism is exclusively designed for eliminating the influence of the gravity center runout torque of the turntable. In the device, a swing stem, an oscillating bearing, a thrust hydraulic cylinder and a fixing seat are mounted on a rotating shaft A, so as to give the thrust diverged from the axle center for generating counterbalance torque during the rotation of the shaft A, and to acquire the counterbalance runout torque required on a corresponding angle via the direction variation of the hydraulic cylinder thrust when the shaft A is rotated to a certain angle, thereby offsetting the gravity center runout torque caused by the gravity of the turntable. The device is compact and reasonable in structure as well as convenient and practical in use, and has no noise, high counterbalance precision and remarkable counterbalance effect.

Description

The balanced controls of five machining centers of double pendulum turntable
Technical field
The utility model relates to mechanical manufacturing field, is the balanced controls of five machining centers of a kind of double pendulum turntable specifically.
Background technology
Five machining centers of double pendulum turntable are the lathes that have the complex-curved impeller of 2D or 3D, cam, mould specific design for processing, and it is configured to X, Y, three rectilinear coordinates of Z and two revolutions of A, C coordinate.The cradle-type turntable of five machining centers of double pendulum turntable is made up of two gyroaxises of A, C, because actual needs, the center of gravity of cradle-type turntable can depart from the A shaft centre line, when lathe moved, turntable can bring in A axle turning course by the caused center of gravity yaw moment that changes according to certain rules of deadweight.The generation of this moment can influence the normal operation of A axle torque motor, because of overload causes the motor damage or influences whole machine tool accuracy, and periodic yaw moment also can cause the reduction of lathe reliability, make the part fatigue rupture and produce noise, even under the state of static or low speed, because the existence of yaw moment also can bring additional load to lathe, influences the normal operation of motor or actuator.
In order to eliminate or to reduce the influence that this moment is brought, just must form a kind of opposing torque with close feature of offsetting this moment, make a kind of A spindle balance mechanism that meets five machining center specific conditions of double pendulum turntable.
Summary of the invention
The purpose of this utility model just provides the balanced controls of five machining centers of a kind of double pendulum turntable, and it can eliminate the influence of turntable center of gravity yaw moment, improves processing precision of products, improves working conditions.
The technical solution of the utility model is as follows:
The balanced controls of five machining centers of this double pendulum turntable comprise fork, oscillating bearing, holder and thrust hydraulic cylinder.End at rotating shaft A is connected with fork, and the little axle of fork afterbody connects oscillating bearing, and the oscillating bearing other end connects the piston rod in the thrust hydraulic cylinder, and thrust hydraulic cylinder body end is connected on the holder that is fixed on the lathe.
The utility model is at rotating shaft A axle left end a thrust hydraulic cylinder device to be installed, it can make and provide the thrust of disalignment at any time and produce trimming moment in the rotation process of A axle, and the variation by the thrust hydraulic cylinder direction obtains balance yaw moment required on the respective angles when the A axle turns to different angles, thereby offsets the center of gravity yaw moment that turntable gravity is brought.The thrust hydraulic cylinder can be center swing with the axle on the holder, when work can by oscillating bearing with thrust on fork, form A shaft balancing moment.
The beneficial effects of the utility model:
1, compact conformation is reasonable, practicality easy for installation; Can be by adjusting the clamped position of fork on axle, simply, the size of adjustment moment effectively, improve installation accuracy.
2, the use of gas-liquid conversion compensator can be rapidly, provide oil pressure to oil cylinder exactly, reaction speed improves greatly, and noiselessness, installs simply, has improved operating efficiency.
3, the particular design of balanced controls makes trimming moment more approach the theoretical value of center of gravity yaw moment, has reduced the error between two values, has increased balance quality.
4, the use of oil cylinder piston boom end oscillating bearing, reduced each zero, the frictional force between the parts and the internal stress of total, improved operating efficiency.
This balance sysmte is simple in structure, and is easy for installation, and gross data and mapping analysis conclusion by calculating in a large number, but the analysis of the installation of Steering Body and theoretical error makes this balance sysmte more can perform to the best, near desirable counterbalance effect.
Description of drawings
Fig. 1 is the front view of the balanced controls of five machining centers of double pendulum turntable.
Fig. 2 is the side view of the balanced controls of five machining centers of double pendulum turntable.
Fig. 3 is the partial enlarged drawing of the balanced controls of five machining centers of double pendulum turntable.
Fig. 4,5 is the trimming moment curve of balanced controls of five machining centers of double pendulum turntable and the comparative analysis schematic diagram of A axle yaw moment curve.
The specific embodiment
Below in conjunction with drawings and Examples utility model is further specified:
As Figure 1-3, the balanced controls of five machining centers of double pendulum turntable comprise fork 2, oscillating bearing 3, holder 4 and thrust hydraulic cylinder 5.Holder 4 is fixed on the lathe bed 6, and thrust hydraulic cylinder 5 is installed on the axle of holder 4, and is the center swing with the axle.The thrust hydraulic cylinder 5 piston rod front ends oscillating bearing 3 that is threaded, oscillating bearing 3 other ends are installed on the axle of fork 2, fork 2 is clamped in the left end of A axle 1, and adjust fork 2 when the original state and the clamped position of A axle 1 according to the gross data that calculates, thrust hydraulic cylinder 5 is also made adjustment accordingly simultaneously, requirement thrust satisfies the direction under the original state, thereby trimming moment curve and A axle yaw moment curve are close.Thrust hydraulic cylinder 5 adopts the afterbody fuel feeding, connects oil pipe and links to each other with gas-liquid conversion compensator.
Can use formula: GL=g1l1+g2l2 according to the weight and the position of each parts of the turntable of five machining centers of double pendulum turntable part
The gross weight of G-turntable parts;
The center of gravity of L-turntable parts is to the distance of A axle pivot;
G1, g2 ... the weight of each parts of-turntable part;
L1, l2 ... the center of gravity of each parts of-turntable part is to the distance of A axle pivot;
Calculate the overall weight and the position of centre of gravity of A axle rotating part, the angle of known A axle swing is-10 °~100 °, calculate the yaw moment of on all angles (desirable several integer angles) by moment formula T=GL, can draw a theoretical yaw moment curve by mapping again, just necessarily require on all angles of A axle swing, to have size identical for offsetting yaw moment, the trimming moment that direction is opposite acts on the A axle, promptly seek a trimming moment curve that matches or be close with theoretical yaw moment curve (be convenient contrast and mapping, only consider that moment size do not consider direction).As shown in Figure 4, calculating that process is a large amount of and contrast screening can draw a curve and theoretical yaw moment curve b is close, shown in curve a among the figure.Can find out by two curves among the figure, A shaft angle degree when being 0 ° and a certain angle with theoretical yaw moment curve b crossing (complete equipilibrium yaw moment), but bigger at other angle time errors.
As shown in Figure 5, by analysis,, can imagine profile of equilibrium integral body to make the profile of equilibrium approach theoretical yaw moment curve e more with this, thereby to reduce error to increasing the angle direction changing of the relative positions in order to reduce the error between two curves.Calculate and analyze as can be known through a large amount of, under balanced controls cardinal principle installation dimension and the unaltered situation of cylinder thrust size, the profile of equilibrium when integral left moves right in the drawings shape do not have too big variation, therefore think that whole in the drawings shifting balance curve reduces the size that the mode of error can be used to instruct the A axle to adjust the angle of cylinder thrust and vertical direction when initial position and finishes, embodiment is a clamped position of regulating fork and A axle, and recomputate trimming moment when all angles, make the new profile of equilibrium in the drawings and theoretical yaw moment curve e contrasts.Through calculating and check analysis repeatedly, can obtain the very little profile of equilibrium of error, this curve is shown in the curve c among Fig. 5.

Claims (2)

1. the balanced controls of five machining centers of a double pendulum turntable, it is characterized in that: the balanced controls of five machining centers of this double pendulum turntable comprise fork (2), oscillating bearing (3), holder (4) and thrust hydraulic cylinder (5), be connected with fork (2) in the end of rotating shaft A axle (1), the little axle of fork (2) afterbody connects oscillating bearing (3), oscillating bearing (3) other end connects the piston rod in the thrust hydraulic cylinder (5), and thrust hydraulic cylinder (5) cylinder body end is fastened on the holder (4) on the lathe bed (6).
2. the balanced controls of five machining centers of a kind of double pendulum turntable according to claim 1, it is characterized in that: holder (4) is fixed on the lathe bed (6), thrust hydraulic cylinder (5) is installed on the axle of holder (4), and be the center swing with the axle, thrust hydraulic cylinder (5) the piston rod front end oscillating bearing (3) that is threaded, oscillating bearing (3) other end is installed on the axle of fork (2), fork (2) is clamped in the left end of rotating shaft A axle (1), thrust hydraulic cylinder (5) adopts the afterbody fuel feeding, connects oil pipe and links to each other with gas-liquid conversion compensator.
CNU2008201239908U 2008-12-03 2008-12-03 Balance mechanism of five-shaft machining center for double pendulum turntable Expired - Lifetime CN201329518Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNU2008201239908U CN201329518Y (en) 2008-12-03 2008-12-03 Balance mechanism of five-shaft machining center for double pendulum turntable

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNU2008201239908U CN201329518Y (en) 2008-12-03 2008-12-03 Balance mechanism of five-shaft machining center for double pendulum turntable

Publications (1)

Publication Number Publication Date
CN201329518Y true CN201329518Y (en) 2009-10-21

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ID=41222892

Family Applications (1)

Application Number Title Priority Date Filing Date
CNU2008201239908U Expired - Lifetime CN201329518Y (en) 2008-12-03 2008-12-03 Balance mechanism of five-shaft machining center for double pendulum turntable

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105382624A (en) * 2015-12-21 2016-03-09 北京工研精机股份有限公司 Double-hydraulic cylinder counterweight two-shaft electric turntable mechanism and method thereof for compensating overturning moment
CN106514419A (en) * 2016-10-17 2017-03-22 中国航空工业集团公司洛阳电光设备研究所 Correction method of inclination of five-axis vertical numerical control machine tool rotating shaft
CN107932157A (en) * 2016-10-13 2018-04-20 发那科株式会社 The stance adjustment method of gas balance mechanism and gas balance mechanism

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105382624A (en) * 2015-12-21 2016-03-09 北京工研精机股份有限公司 Double-hydraulic cylinder counterweight two-shaft electric turntable mechanism and method thereof for compensating overturning moment
CN107932157A (en) * 2016-10-13 2018-04-20 发那科株式会社 The stance adjustment method of gas balance mechanism and gas balance mechanism
CN107932157B (en) * 2016-10-13 2019-12-13 发那科株式会社 Gas balance mechanism and posture adjustment method for gas balance mechanism
CN106514419A (en) * 2016-10-17 2017-03-22 中国航空工业集团公司洛阳电光设备研究所 Correction method of inclination of five-axis vertical numerical control machine tool rotating shaft

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Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
ASS Succession or assignment of patent right

Owner name: BMEIMT CO., LTD.

Free format text: FORMER OWNER: HIGH TECHNOLOGIES CO., LTD., BEIJING ELECTROMECHANICAL ACADEMY

Effective date: 20120425

C41 Transfer of patent application or patent right or utility model
TR01 Transfer of patent right

Effective date of registration: 20120425

Address after: 100027 Beijing city Chaoyang District, No. four North Road, Kalibin four

Patentee after: BMEIMT Co., Ltd.

Address before: 100027 Beijing city Chaoyang District Gongti North Road No. 4

Patentee before: High Technologies Co., Ltd., Beijing Electromechanical Academy

CX01 Expiry of patent term

Granted publication date: 20091021

CX01 Expiry of patent term